Police are cracking down on parking outside schools in a bid to keep children safe.
They say concerns have been raised over school parking over recent months.
There are fears a child could be involved in an accident if measures are not taken to make school road areas safer.
The Chorley Borough Neighbourhood Policing Team is now taking action to prevent any accidents happening.
They have written to schools warning: “Drivers are strictly prohibited from stopping on the yellow zig zag areas outside of schools between the hours of 8am and 6pm.
“Due to the specified time this also includes stopping during any breakfast club or after-school club times.
“Lancashire County Council has constructed yellow signage around these zig zag areas creating a ‘Clearway’.
“These are enforceable by police officers and other authorities which could result in a fine should you be found to be in contravention.
“Our priority is to keep all our children safe when they are attending from leaving the school environment and we hope to enlist your co-operation and support by avoiding parking in contravention of these restrictions.”
PCSO Ben Pilling said the letter had gone out to all schools in Chorley, with one school experiencing the problem is said to be St Peter’s CE Primary, Eaves Lane, Chorley.
PCSO Pilling said: “It’s something we are focusing on.
He said the school head was happy for the police to be stepping in.
Paul Binks, Lancashire County Council’s road and transport safety manager, said: “Schools are very busy at the start and end of the day and bad parking adds to the safety risks associated with congestion, so we’re grateful to the police for enforcing the traffic regulations.
“The county council continues to work with schools and parents to encourage safety outside the school gates and on measures, which encourage people to consider walking or cycle if it’s an option.”